DropYourShorts,
Just to clarify, this is not my first rodeo........
I held a Green Card in the late 70's (1900's) - bagged it.
Married a Californian, ..... never took the opportunity for another Green...
studiously avoided the obligations of the "Non-Voting Citizen" status afforded by most US visas and the Green Card.
Have held TN's for several years and an E-2 for 15 yrs....
You might say I'm knowledgeable on cross border issues.
My comments on my incident arriving in Canada are the one and only time I have crossed with cash.... and will be my last.
I hold a NEXUS card, am a Global Entry member and Trusted Traveler..... one must be careful not to threaten those privileges.
My point to the OP was to either carry less than $10k or wire it ahead.... forget declaring b/c the immigration/customs officers are idiots - IMO.
You are correct about when and how the rules are interpreted.... haphazard comes to mind.
Just like RD -- nod, smile, speak sparingly..... you'll be fine.
I hope we agree.